Most EDH players are going to have at least a few mana sitting around more often than not, and periodically paying 3 mana to keep this apex hunter around is so worth the investment
Order Mishra, Lost to Phyrexia Token Proxies Today & Elevate Your Game Dont let card prices hold back your creativity or limit your Commander decks
Technically, you could also choose land, but lands are never cast, so doing so would have no effect
If the effect doesn't specify a player, the object's controller puts those counters on it
Green has never really been splashed for much, it is the one normally doing the splashing
The goal was to self-bounce and recast your things to trigger ETB things (Mulldrifter), self-bounce things (Azorius Aethermage), leaves play things (Circuit Mender), cast things (Equilibrium) and tapping the dork for something valuable (Opposition), with a bounce of self-bounce (Erratic Portal) and a flicker backup theme (Far Traveler proper) in order to lean into the non-cast stuff